Configure Planning hierarchy in Flexible planning

Hi,

I am implementing flexible planning where i need to configure planning hierarchy. I have 5 characteristics in my planning hierarchy as shown below:

1) Sales Org

2) Sales District

3) Sales Office

4) Product Hierarchy

5) Material

Now when I am creating my planning hierarchy in MC61, I can provide values for my above mentioned characteristics for all five levels by clicking on "Next Level". screenshot below:

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Now i have around 3000 materials (which is my last level in the hierarchy) so the total combinations could be more then 20000 which is very difficult to add manually in the planning hierarchy.

My question is, is there a way where I can load all this data  at different levels (Characteristics) in my planning hierarchy in mass or via some standard upload method or any other way?

Que 2) Another question, Also what is the way to populate the info structure with the history data in the key figures?

I have created a custom info structure where I copied characteristics from multiple standard info structure. What is the correct approach to populate the data in the info structure?

I would appreciate if any of you would let me know the steps for the above to processes.

Thanks,

AK